diff --git a/compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/ConeTypeUtils.kt b/compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/ConeTypeUtils.kt
index 485e82f3648..88a1b4a5a45 100644
--- a/compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/ConeTypeUtils.kt
+++ b/compiler/fir/cones/src/org/jetbrains/kotlin/fir/types/ConeTypeUtils.kt
@@ -131,8 +131,4 @@ fun ConeKotlinType.renderReadableWithFqNames(): String {
     return builder.toString()
 }
 
-fun ConeKotlinType.hasError(): Boolean = when (this) {
-    is ConeErrorType -> true
-    is ConeFlexibleType -> lowerBound.hasError() || upperBound.hasError()
-    else -> typeArguments.any { it is ConeKotlinType && it.hasError() }
-}
+fun ConeKotlinType.hasError(): Boolean = contains { it is ConeErrorType }